80
10. Turn on gas and electrical supplies to furnace.
11. Check furnace operation through 2 complete heat operating
cycles. Look at burners. Burner flames should be clear blue,
almost transparent. See Fig. 63.
12. Check for gas leaks.
FIRE OR EXPLOSION HAZARD
Failure to follow this warning could result in personal
injury, death, and/or property damage.
Never purge a gas line into a combustion chamber. Never
test for gas leaks with an open flame. Use a commercially
available soap solution made specifically for the detection
of leaks to check all connections. A fire or explosion may
result causing property damage, personal injury or loss of
life.
!
WARNING
13. Replace main furnace door.
Secondary Heat Exchangers
The condensing side (inside) of the secondary heat exchanger
CANNOT be serviced or inspected without complete removal of
the heat exchanger assembly. Detailed information on heat
exchanger removal can be obtained from your Distributor.
WINTERIZATION
UNIT AND PROPERTY DAMAGE HAZARD
Failure to follow this caution may result in unit component or
property damage.
If the furnace is installed in an unconditioned space where the
ambient temperatures may be 32_ F(0_ C) or lower, freeze
protection measures must be taken to prevent minor property
or product damage.
CAUTION
!
Since the furnace uses a condensing heat exchanger, some water
will accumulate in the unit as a result of the heat transfer process.
Therefore, once it has been operated, it cannot be turned off and
left off for an extended period of time when temperatures will
reach 32_F(0_C) or lower unless winterized. Follow these
procedures to winterize your furnace:
UNIT COMPONENT DAMAGE HAZARD
Failure to follow this caution may result in damage to the
furnace and other property damage.
Do not use ethylene glycol (automotive antifreeze coolant or
equivalent). Failure of plastic components may occur.
CAUTION
!
1. Obtain propyl ene gl ycol ( RV/s wimmi ng pool a ntifr eeze or
equiva l ent ).
2. Turn off gas and elec t ri c al suppli es to your furnace.
3. Re m ove furnace control door.
4. Re m ove the top unuse d rubber plug fr om the por t on the
collec tor box oppos i te the condensa te tr ap. See Fig 59.
5. Connect a field supplied 3/8--in. (9.5--mm) ID tube to the
open port on the col le ctor box.
6. I nse rt a fi eld supplied funnel into the tube.
7. Pour one quart (liter) of anti--freeze solution into the funne l /
tube. Antifreeze should run thr ough the i nduce r housing,
overf i ll condens ate trap and f low to a n open dra in.
8. Re pla ce the rubber plug in the port on the collect or box.
9. Re m ove the middl e unuse d rubbe r plug from the port on the
collec tor box oppos i te the condensa te tr ap. See Fig. 59.
10. Re pea t St e ps 5 thr ough 8.
11. If a condensa te pump is use d, c heck wit h pump manuf actur er
to verify pump is safe for use with antifreeze used. Allow
pump to start and pump anti--freeze to open drain.
12. Re pla c e mai n door.
13. W he n fur nac e is re--start ed, flush condensa t e pump wit h clea r
water to check for proper operation before re--starting furnace.
14. Propylene glycol need not be removed before re-- starting
furnace.
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